extern Lisp_Object Q_foreground, Q_background, Q_face, Q_descriptor, Q_group;
extern Lisp_Object Q_width, Q_height, Q_pixel_width, Q_pixel_height, Q_text;
extern Lisp_Object Q_items, Q_properties, Q_image, Q_percent, Qimage_conversion_error;
extern Lisp_Object Q_foreground, Q_background, Q_face, Q_descriptor, Q_group;
extern Lisp_Object Q_width, Q_height, Q_pixel_width, Q_pixel_height, Q_text;
extern Lisp_Object Q_items, Q_properties, Q_image, Q_percent, Qimage_conversion_error;